In this photo taken Tuesday, November 26, 2013 and made available Thursday, November 28, a Sumatran tiger leaps on Australia Zoo handler Dave Styles, left, as an unidentified man comes to Styles' aid in an enclosure at the zoo at Sunshine Coast, Australia. Styles who suffered puncture wounds to his head and shoulder was rescued by fellow workers at the zoo. He is recovering following surgery after being airlifted to a hospital. (Photo by Johanna Schehl/AP Photo)

A man takes a “selfie” with camels at a farm in Taif November 1, 2014. Saudi Arabia said late on Wednesday it had detected six new cases of the deadly Middle East Respiratory Syndrome (MERS) in 24 hours, the biggest daily jump for months with officials blaming lax hospital procedures. Scientists are not sure of the origin of the virus, but several studies have linked it to camels and some experts think it is being passed to humans through close physical contact or through the consumption of camel meat or camel milk. (Photo by Mohamed Alhwaity/Reuters)

Hair stylist Marcelo Avatte (R) prepares to fit Isidora Serrano, a 14-year-old who lost her hair due to chemotherapy to treat her bone cancer, with a natural hair wig in the cancer ward of the Luis Calvo Mackenna Hospital in Santiago, October 23, 2014. The wigs, handmade by Italian-Chilean hair stylist Marcelo Avatte and his team, have helped the children regain their self-esteem and confidence during cancer treatment. Renowned for making customised wigs, Avatte has donated more than 300 wigs since 2009 and says he was motivated to begin the project by the pain he felt when his own son lost his hair during chemotherapy. (Photo by Rodrigo Garrido/Reuters)

A protester is taken to hospital after he was wounded by birdshot during a street protest after it was announced that the runoff Jan. 24, presidential election had been postponed, in Port-au-Prince, Haiti, Friday, January 22, 2016. The Provisional Electoral Council in Haiti has postponed the election amid escalating protests by the opposition, which claims the first round was marred by fraud in favor of a government-backed candidate. (Photo by Dieu Nalio Chery/AP Photo)

Hospitality staff members laugh as they stand on Tiananmen Square before the closing ceremony of China's 19th Party Congress at the Great Hall of the People in Beijing, Tuesday, October 24, 2017. The ruling Communist Party on Tuesday formally lifted Xi Jinping's status to China's most powerful ruler in decades, setting the stage for the authoritarian leader to tighten his grip over the country while pursuing an increasingly muscular foreign policy and military expansion. (Photo by Mark Schiefelbein/AP Photo)

Wang uses a mobile phone as she take a rest in her room at the accommodation where patients and their family members stay while seeking medical treatments in Beijing, China, June 23, 2016. Wang, who suffers from cervical cancer, came from Inner Mongolia to seek treatment at a specialist hospital in Beijing. (Photo by Kim Kyung-Hoon/Reuters)

This photo taken on January 30, 2020 shows officials in protective suits checking on an elderly man wearing a facemask who collapsed and died on a street near a hospital in Wuhan. AFP journalists saw the body on January 30, not long before an emergency vehicle arrived carrying police and medical staff in full-body protective suits. The World Health Organization declared a global emergency over the new coronavirus, as China reported on January 31 the death toll had climbed to 213 with nearly 10,000 infections. (Photo by Hector Retamal/AFP Photo)

Visitors wearing face masks walk near the Gwanghwamun, the main gate of the 14th-century Gyeongbok Palace, and one of South Korea's well-known landmarks, in Seoul, South Korea, Saturday, February 22, 2020. South Korea on Saturday reported a six-fold jump in viral infections in four days to 346, most of them linked to a church and a hospital in and around the fourth-largest city where schools were closed and worshipers and others told to avoid mass gatherings. (Photo by Lee Jin-man/AP Photo)